Dr. Price traveled to hundreds of cities in a total of 14 different countries in his search to find healthy people. He investigated some of the most remote areas in the world. He observed perfect dental arches, minimal tooth decay, high immunity to tuberculosis and overall excellent health in those groups of people who ate their indigenous foods. He found when these people were introduced to modernized foods, such as white flour, white sugar, refined vegetable oils and canned goods, signs of degeneration quickly became quite evident. Dental caries, deformed jaw structures, crooked teeth, arthritis and a low immunity to tuberculosis became rampant among them.
Dr. Price documented this ancestral wisdom including hundreds of photos in this book, Nutrition and Physical Degeneration.